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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Jul. 02, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | Changes in goodwill presented by reportable segments were as follows:
| Software Products Segment |  | Services Segment |  |  |  | Total
| (in thousands)
Balance, October 1, 2015 | $ | 1,016,413 |  |  | $ | 52,628 |  |  |  |  | $ | 1,069,041 |
Acquisition of Vuforia | 23,316 |  |  | — |  |  |  |  | 23,316 |
Acquisition of Kepware | 77,081 |  |  | — |  |  |  |  | 77,081 |
Foreign currency translation adjustments | 228 |  |  | (6 | ) |  |  |  | 222 |
Balance, July 2, 2016 prior to reallocation | $ | 1,117,038 |  |  | $ | 52,622 |  |  |  |  | $ | 1,169,660 |
| Solutions Group |  | Technology Platform Group |  | Professional Services |  | Total
| (in thousands)
Balance, July 2, 2016 after reallocation | $ | 1,050,013 |  |  | $ | 90,053 |  |  | $ | 29,594 |  |  | $ | 1,169,660 |
Goodwill and Acquired Intangible Assets | Goodwill and acquired intangible assets consisted of the following:
| July 2, 2016 |  | September 30, 2015
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
| (in thousands)
Goodwill (not amortized) |  |  |  |  | $ | 1,169,660 |  |  |  |  |  |  | $ | 1,069,041 |
Intangible assets with finite lives (amortized) (1): |  |  |  |  |  |  |  |  |  |  |
Purchased software | $ | 352,782 |  |  | $ | 192,509 |  |  | $ | 160,273 |  |  | $ | 284,257 |  |  | $ | 174,887 |  |  | $ | 109,370 |
Capitalized software | 22,877 |  |  | 22,877 |  |  | — |  |  | 22,877 |  |  | 22,877 |  |  | — |
Customer lists and relationships | 355,504 |  |  | 198,335 |  |  | 157,169 |  |  | 349,938 |  |  | 174,017 |  |  | 175,921 |
Trademarks and trade names | 19,012 |  |  | 13,151 |  |  | 5,861 |  |  | 18,534 |  |  | 12,759 |  |  | 5,775 |
Other | 3,941 |  |  | 3,862 |  |  | 79 |  |  | 3,946 |  |  | 3,711 |  |  | 235 |
| $ | 754,116 |  |  | $ | 430,734 |  |  | $ | 323,382 |  |  | $ | 679,552 |  |  | $ | 388,251 |  |  | $ | 291,301 |
Total goodwill and acquired intangible assets |  |  |  |  | $ | 1,493,042 |  |  |  |  |  |  | $ | 1,360,342 |
(1) The weighted average useful lives of purchased software, customer lists and relationships, trademarks and trade names and other intangible assets with a remaining net book value are 7 years, 10 years, 9 years, and 3 years, respectively.
Amortization of Intangible Assets | The aggregate amortization expense for intangible assets with finite lives was classified in our Consolidated Statements of Operations as follows:
| Three months ended |  | Nine months ended
| July 2, 2016 |  | July 4, 2015 |  | July 2, 2016 |  | July 4, 2015
| (in thousands)
Amortization of acquired intangible assets | $ | 8,294 |  |  | $ | 9,105 |  |  | $ | 25,040 |  |  | $ | 27,691 |
Cost of software revenue | 6,383 |  |  | 4,957 |  |  | 18,235 |  |  | 14,438 |
Total amortization expense | $ | 14,677 |  |  | $ | 14,062 |  |  | $ | 43,275 |  |  | $ | 42,129 |

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